[linux-dvb] Re: DVB-C and Volume-Control

[Joerg Friedrich <Joerg.Dieter.Friedrich@uni-konstanz.de>]

Joerg Friedrich schrieb am Sonntag, 08. Dezember 2002 um 10:34:54 +0100:
> Joerg Friedrich schrieb am Samstag, 07. Dezember 2002 um 15:45:55 +0100:
> > Having read that the 'newstruct' drivers support volume-control on DVB-C
> > Cards was one major reason to switch. But even with the new drivers the
> > volume does not in- or decease when i.e. using vdr.
> > 
> > What might be wrong? Or did I dream reading of this capability :-)
> 
> Annotations: I own a Siemens DVB-C rev. 1.5.
> and I use the latest CVS-drivers.
> 
> Can someone help debuging?
> 
Again answering myself:

Found this in av7110.c:

if (av7110->saa->device->subsystem_vendor == 0x110a) {
	if (i2c_writereg(av7110, 0x80, 0x0, 0x80)==1) {
		i2c_writereg(av7110, 0x80, 0x0, 0);
		printk("av7110: DVB-C analog module detected, "
		       "initializing MSP3400\n");
		ddelay(10);
		msp_writereg(av7110, 0x12, 0x0013, 0x0c00);
		msp_writereg(av7110, 0x12, 0x0000, 0x7f00); // loudspeaker + headphone
		msp_writereg(av7110, 0x12, 0x0008, 0x0220); // loudspeaker source
		msp_writereg(av7110, 0x12, 0x0004, 0x7f00); // loudspeaker volume
		msp_writereg(av7110, 0x12, 0x000a, 0x0220); // SCART 1 source
		msp_writereg(av7110, 0x12, 0x0007, 0x7f00); // SCART 1 volume
		msp_writereg(av7110, 0x12, 0x000d, 0x4800); // prescale SCART
	}

	// switch DVB SCART on
	outcom(av7110, COMTYPE_AUDIODAC, MainSwitch, 1, 0);
	outcom(av7110, COMTYPE_AUDIODAC, ADSwitch, 1, 1);

	//setgpio(av7110, 1, GPIO_OUTHI); // RGB on,
	//SCART pin 16
	//setgpio(av7110, 3, GPIO_OUTLO); // SCARTpin 8
	av7110->adac_type = DVB_ADAC_NONE;
}

and lspci reports:
00:0a.0 Class 0480: 1131:7146 (rev 01)
        Subsystem: 110a:0000                    <-----------!!!!
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 32 (3750ns min, 9500ns max)
        Interrupt: pin A routed to IRQ 14
        Region 0: Memory at e1800000 (32-bit, non-prefetchable) [size=512]

I think this means I cannot set any Volumelevel :-(((

-- 
Heute ist nicht alle Tage, ich komm' wieder, keine Frage!!!

   Joerg

"If you don't want your dog to have bad breath, do what I do:  Pour a little
 Lavoris in the toilet."
-- Comedian Jay Leno


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